docs: def validateAllServers(self):
          """
          This operation provides status information about a specific ArcGIS
          Server federated with Portal for ArcGIS.
  
          Parameters:
             serverId - unique id of the server
          """
          url = self._url + "/servers/validate"
          params = {"f" : "json"}
          return self._get(url=url,
                           param_dict=params,
                           proxy_port=self._proxy_port,
                           proxy_url=self._proxy_ur)